I just tried reverse image search using this image:
It didn't work for me for the first couple of times, gave no results
(the generated URL was
https://kagi.com/images?q=Uploaded+File&reverse=upload&key=ReMSZU9BPfGt7zQvYAEvySZzHEPJfli2)
But now I tried again to try to reproduce the problem and well.. it worked:
(it generated a new URL: https://kagi.com/images?q=Uploaded+File&reverse=upload&key=4JAEuWj5udQsCqYs5F6UdPjDK6ZKyGnV)
Those 3 times I just went to kagi home page -> Advanced search -> Images -> clicked the lens icon, scrolled down and pasted the image from my clipboard.
Server is SOUTHAME-EAST1, I'm using Google Chrome, and Mullvad VPN (some sites block it, don't know if it matters), don't know what other information could be helpful